| 摘要 |
A steam turbine ( 1 ) having an upper housing part ( 4 ) and a lower housing part ( 5 ), in which the steam turbine ( 1 ) has at least one overflow line ( 18 ) between a live steam adjusting valve ( 8, 9 ) and a high-pressure steam turbine inlet, and the valve housing ( 14 ) of the live steam adjusting valve ( 8, 9 ) communicates with the overflow line ( 18 ) via a flange connection ( 27 ), and a live steam pipe ( 25 ) in the live steam adjusting valve ( 8, 9 ) is provided as a steam duct between the valve housing ( 14 ) and the overflow line ( 18 ), and a sealing element ( 19 ) is disposed between the live steam pipe ( 25 ) and a sealing seat ( 28 ) in the overflow line ( 18 ), is distinguished in that an annular chamber ( 24 ) between the live steam pipe ( 25 ) and the valve housing ( 14 ) is provided with a pressure relief line ( 21 ) into a chamber of lower pressure than the live steam pressure. As a result, an improved steam turbine with pressure relief of flanges in overflow lines between live steam adjusting valves and high-pressure steam turbine inlets is made available, and as a result the flange connections are lighter in weight and embodied with greater thermal elasticity.
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